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Jurnal Teknik Mesin
Published by Institut Teknologi Padang
ISSN : 20894880     EISSN : 25988263     DOI : https://doi.org/10.21063/jtm
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
JTM is a journal aims to be a peer-reviewed platform and an authoritative source of information. We publish original research papers, review articles and case studies focused on mechanical engineering and other related topics. All papers are peer-reviewed. JTM is managed to be issued twice in every volume (April and October). The Scope of JTM is: Energy Science and Engineering Applied Mechanics and Materials Design, Manufacturing and Product Development Control, Instrumentation and Robotics
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 243 Documents
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Preventive Maintenance Study on H-25 Gas Turbine Sulaiman; Fahmirullah
Jurnal Teknik Mesin Vol 10 No 2 (2020): Jurnal Teknik Mesin Vol.10 No.2 October 2020
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2020.v10.i2.141-144

Abstract

This study aims to determine the effect of the time-based maintenance method preventive maintenance, namely major inspection on the efficiency of H-25 gas turbine. The efficiency calculation method based on operating data from the gas turbine. The effect of major inspection can be seen from the compressor efficiency, turbine efficiency and fuel consumption. The results of calculations before the major inspection are 80% of compressor efficiency, 83% of turbine efficiency, and 0.751 kg/kWh of fuel consumption, while after the major inspection, compressor efficiency is 80%, turbine efficiency is 85% and fuel consumption is 0.740 kg/kWh.
Effect of Dynamic Load on Fiberglass and Coir-Based Hybrid Composite Stiffness Mastariyanto Perdana
Jurnal Teknik Mesin Vol 6 No 1 (2016): Jurnal Teknik Mesin Vol.6 No.1 April 2016
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2016.v6.i1.1-5

Abstract

The composites made from natural fibers have been widely used in the engineering field because the natural fiber-based composites have lightweight nature, relatively strong and environmentally friendly. The use the synthetic fiber-based composites reduced to obtain the environmentally friendly composites. In this study, the use synthetic fibers (fiberglass) reduced by adding coconut fiber (coir) on the composite mix. Composites in this study using the volume fraction of hybrid fiber 12% fiberglass and 18% coir. The volume fraction of fibers and epoxy hybrid is 30:70. This study aims to determine changes in stiffness of the hybrid composites due to dynamic loads. Hybrid composite loaded by 500, 1000, 1500, and 2000 cycles of the dynamic load. The test results show degradation of the rigidity of the hybrid composite. The stiffness decrease like presented by the ratio of E/Eo. The number of cycles of the dynamic load causes a decrease in stiffness hybrid composites. The stiffness of hybrid composites decrease because of dynamic load treatment reaches 30%.
Experimental Study of Heat Pipe for Solar Collector Heater Dian Wahyu
Jurnal Teknik Mesin Vol 6 No 1 (2016): Jurnal Teknik Mesin Vol.6 No.1 April 2016
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2016.v6.i1.6-14

Abstract

Heat pipes with a size of 0.0127 m diameter x 1.3 m lenght x 0.0008 m thick and absorber with a size of 1m length x 0.1 m width has been created and tested to be used as a solar collector heating element. Heat pipes are made using water as the heat transport medium and using a stainless steel mesh wick 120 as a tool that helps accelerate the flow of condensate inside the heat pipe. Testing of heat pipes will be do in two condition at an inclination of 30o , before the heat pipes selected as the heating element in the solar collector. Testing of heat pipe on the first condition is done by using 1,000 ml of hot water temperature of 100oC with the power supply of 20 watts as a heat source in the evaporator side and further testing of pipe heat was tested by direct solar radiation, this test is intended to see directly if heat pipe was made able to work in conditions that are expected. Tests are done to see the heat transfer capacity and response speed (τ) of the heat pipe. Based on testing obtained the fastest response in the heat pipes transfer of the heat contained in the filling ratio of 20% with the heat transfer efficiency of 75%.
Effect of Aluminium and Copper Powder Addition in Alumina Matrix on Bending Strength Hendriwan Fahmi; Sulaeman
Jurnal Teknik Mesin Vol 6 No 1 (2016): Jurnal Teknik Mesin Vol.6 No.1 April 2016
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2016.v6.i1.15-18

Abstract

The aim of this research is to find out the influence of the addition of aluminum (Al) and copper (Cu) on matrik alumina (Al2O3) against the forces of bending. Of aluminum made by a process of water and atomization of copper made by the process of atomization centrifugal. Consisting of copper aluminum and continued with a sifting using a measure of 50 - 100 mesh up to get the size of the amounting to 150 - 125 µm. of the measures followed by the process of mixing with the variation of a composition of 100 % of the volume of Al2O3, 90 % of the volume of Al2O3 + 10 % heavy Al and Cu, 80 % of the volume of Al2O3 + 20 % heavy Al and Cu, 70 % of the volume of Al2O3 + 30 % heavy Al and Cu, al2o3 + 60 % of the volume of 40 % heavy Al and Cu. Then will be the process of compacting with pressure 140 MPa. The process of sintering committed using furnace with the temperature 1050 OC by heating rate 5 OC / minute. In this research voltage power bending highest obtained in composition 80 % of the volume of Al2O3 + 20 % heavy Al and Cu to voltage bending average of 6,66MPa.
Automatic Sand Sieving Machine with Three Sieves Nofriady Handra; David A.; Randa J
Jurnal Teknik Mesin Vol 6 No 1 (2016): Jurnal Teknik Mesin Vol.6 No.1 April 2016
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2016.v6.i1.19-23

Abstract

Sand is the base ingredient in the development process. In addition, the material cannot be separated sand use in the industrial world. Often in industrial buildings and workers needed sand material that has been processed. Sand material is usually still mixed with rocks or gravel. To get fine sand material, do the sifting process. The sieving process is carried out in order to get ready for the sand used in the process. The design of this sand sifter tools will provide convenience and a better process when compared with the work done traditionally. Benefits of making the application of automatic sand sieving machine can help the construction workers, especially in the process of building the sand processing to several functionality and usability. And can be used to produce maximum results in conditions that are not limited in the field. The purpose of making sand sifter tools this automated system is to ease the work in process and streamline the shifting sands of time, economic and workforce. The process of making this tool consists of four main processes, manufacture sifter, frame and hopper manufacture, manufacture of other supporting components, and assembly of all components. From the results of tests and experiments, that for 20 kg of the starting material that contains sand and stone (gravel) is processed only takes approximately 25 seconds to produce three types of the filter sand and stone as well. In general, the innovation of this tool enabled us to increase production of larger sieve in a short time, for development work on a large scale; this tool is suitable for generating a large amount of production that would be more economical in terms of time and cost.
The characteristics of Coconut Fiber-Based Composites And Sugar Fiber-Based Composites Asfarizal
Jurnal Teknik Mesin Vol 6 No 1 (2016): Jurnal Teknik Mesin Vol.6 No.1 April 2016
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2016.v6.i1.24-31

Abstract

Composites made from natural plant fibers that are environmentally friendly is now more attractive, lighter weight, the number of abundant, renewable, competitive prices has encouraged the use of a broad field of engineering, building interiors and clothing. The characteristics of each fiber is highly variable and influenced by the maturity of fiber materials, processing into fiber, perlakauan after so fibers and fiber treatment. Known properties of fiber can help choose the method that is right and good to be applied in the manufacturing process of composite. Pretreatment, composition and matrix settings, select the type of adhesive is a method that is widely used to obtain physical and mechanical properties superior but physical properties and mechanical produced highly variable and not consistent.
Design of Undershot Waterwheel Curved Blades as Picohydro Power Plant Generation in Tamangil Village KristianusJamlay; Luther Sule; Duma Hasan
Jurnal Teknik Mesin Vol 6 No 1 (2016): Jurnal Teknik Mesin Vol.6 No.1 April 2016
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2016.v6.i1.32-37

Abstract

Utilization of hydropower plants picohydro recognized scale capable of meeting electricity demand, especially in areas not reached by the electricity such as rural areas. This study aims to analyze high waterfall (head), discharge and water resources available as well as the design of a water wheel undershot the current model corresponding curved blade. This research was conducted in the village of TamangilNuhuten the main object studied is the flow of the waterfall in the village. Primary and secondary data obtained through this study and Field and Library Research with stages such as the construction of drains, water discharge measurements, high measurement waterfall further analyzed quantitatively while the Library Research stages, namely the study of literature (book review). The results showed that the critical velocity water flow (v = 2.45 m/s), effectively head of waterfall (h = 2 m), the discharge of water used (Q = 0.0392 m3/s), and water power are utilized (Pair = 769.65 Watts). From the design obtained that rotation shaft (np = 78.08 rpm), tangential velocity (U = 2.45 m/s), the angular velocity of water wheel (ω = 8.1724 rad/s), the force on the water wheel (F = 96.18 N), torque at the wheels of water (T = 28.85 Nm), electric power that can be generated by a water wheel (Pwater wheel = 235.80 Watt), as well as maximum power efficiency obtained theoretical water wheel (ηteo = 30 59%) and the efficiency of water wheel axle (ηpra = 85.721%). Based on calculations assuming that there will be changes in water flow rate, it is known several important parameters including torque, mass flow rate, rotation, and power and maximum efficiency of water wheels is increasing. It was concluded that the flow of the waterfall village TamangilNuhuten potential to be used as a hydroelectric plant scale picohydro with water wheel underhot the current type and model of blade bent. Among torque, mass flow rate, rotation axis, and the water wheel power is proportional to the maximum efficiency. Hopefully, by the hydroelectric power plants pikohydro scale, it can meet the electricity needs of residents in the TamangilNuhuten village.
Influence of Chemical Composition and Chrome Plating Duration on Thickness and Hardness of the Surface Coating on the Brass Plate SyafrulHadi
Jurnal Teknik Mesin Vol 6 No 1 (2016): Jurnal Teknik Mesin Vol.6 No.1 April 2016
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2016.v6.i1.38-42

Abstract

In the metalworking technology, the electroplating process is categorized as a process of late. Electroplating can be interpreted as a metal coating process by using an electric current, wherein the anode used is chromium, but it also is the chemical composition that is acidic chromium, sulfuric acid, sulfuric and hydrochloric acid, are used to move the particles of the metal coating to the material to be coated , The objective of the research is to see the influence of the chemical composition of the solution to the thickness and hardness of the coating, the effect of long time coating thickness and hardness of the surface coating on the brass plate. Benefits of the research carried out to improve the quality of products in terms of physical, increase corrosion resistance, and increase violence. In this study specimens used rectangular brass plate with a size of 60 mm x 40 mm x 1.5 mm. Chromium electroplating process using a solution by varying the chemical composition of the solution and long plating time 20 minutes, 25 minutes and 30 minutes. Thickness testing conducted by means of Optical Microscope microstructure whereas hardness testing conducted by Micro Hardness Tester with a load of 9807 N. The results of this study showed that the thickness of the layer of the highest at 30 minutes with the chemical composition of the acid solution of chromium (CrO3) 200 grams / liter, sour sulphate (H2SO4) 30 g / liter of 32.85 μm while the highest hardness layer at the time of 25 minutes with the chemical composition of the acid solution of chromium (CrO3) 200 grams / liter, sulfuric acid (H2SO4) 30 g / liter of 112.67 VHN.
Influence of Drying Duration of Paving Block with the 5% Fly Ash Addition on Compressive Strength (Water Binder) Nurzal; Taufik
Jurnal Teknik Mesin Vol 6 No 1 (2016): Jurnal Teknik Mesin Vol.6 No.1 April 2016
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2016.v6.i1.43-49

Abstract

This study was conducted to determine the effect of variations in drying time with the addition of 5% by weight of fly ash in the manufacture of paving blocks through compressive strength testing. Fly ash is derived from the combustion of coal in a steam power plant of SijantangSawahlunto. The increase of production of fly ash causing negative impacts on the environment, so that one of the solutions to overcome such effects is by utilizing fly ash to mix and improve the quality of the paving block (concrete blocks). The composition used to make paving block that is 100% of paving blocks (cement + sand + water) and 95% of paving blocks (cement + sand + water) plus 5% fly ash with variation drying 7, 14, 21, 28 and 35 days. The result showed paving block with 5% by weight of the composition of the fly ash has a higher compressive strength than 0% by weight of fly ash. Optimal conditions obtained on the composition 5% by weight of fly ash and drying time of 35 days. Average - average compressive strength of 23.1 MPa SNI 03-0691-1996 can be classified according to quality and to the parking lot. All the test results are included in SNI, except on drying 7 days with 0% by weight of the composition of the fly ash.
Development of Dynamic Signal Analyzer Virtual Instrument (DSA VI): A Research Proposal Asmara Yanto; Anrinal
Jurnal Teknik Mesin Vol 6 No 1 (2016): Jurnal Teknik Mesin Vol.6 No.1 April 2016
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2016.v6.i1.50-54

Abstract

At present, one of the maintenance types that is being developed is the predictive maintenance based on the mechanical signals obtained by performing the mechanical quantities measurements. In general, a mechanical signal is a dynamic signal where to acquire this signal, it is required a dynamic signal analyzer (DSA) instrument. However, the availability of DSA instruments in the market is limited in functionality and specification and also high cost. Therefore, in this work, a DSA instrument in the form of computer-based virtual instrument (DSA VI) would be developed. The DSA VI would designed by using the LabVIEW software and an Arduino UNO hardware. It is hopefully that the developed DSA VI capables to acquiring, processing, displaying, storing and reading the measured mechanical signals.

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